Is it safe to delete logs-deprecation indices, where can we disable creation of these indices?

[Vadym]

We have some system indices generated by ES, can we turn off generation of these indices and is it safe to delete them?

health status index
green open .ds-ilm-history-5-2023.06.02-000012
green open .ds-.logs-deprecation.elasticsearch-default-2023.08.01-000017
green open .ds-.logs-deprecation.elasticsearch-default-2023.07.02-000015
green open .ds-ilm-history-5-2023.07.02-000014
green open .ds-ilm-history-5-2023.08.01-000016

[Vadym]

It seems these indices can't be deleted even when Ilm is stopped:

{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"index [.ds-ilm-history-5-2023.08.01-000016] is the write index for data stream [ilm-history-5] and cannot be deleted"}],"type":"illegal_argument_exception","reason":"index [.ds-ilm-history-5-2023.08.01-000016] is the write index for data stream [ilm-history-5] and cannot be deleted"},"status":400}%

{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"index [.ds-.logs-deprecation.elasticsearch-default-2023.08.01-000017] is the write index for data stream [.logs-deprecation.elasticsearch-default] and cannot be deleted"}],"type":"illegal_argument_exception","reason":"index [.ds-.logs-deprecation.elasticsearch-default-2023.08.01-000017] is the write index for data stream [.logs-deprecation.elasticsearch-default] and cannot be deleted"},"status":400}%

[Vadym]

Maybe someone can point me to the right documentation. Currently I can't delete last index of a data stream whether ILM is turned on or off.

"You cannot delete the current write index of a data stream. To delete the index, you must roll over the data stream so a new write index is created. You can then use the delete index API to delete the previous write index."

Also I can't increase the replication factor on these indices, cluster acknowledges the change but replication factor stays at 1, creating fake "RED" status conditions.